Description
The LM2907, LM2917 series are monolithic frequency to voltage converters with a high gain op amp/comparator designed to operate a relay, lamp, or other load when the input frequency reaches or exceeds a selected rate.
Features
- n Ground referenced tachometer input interfaces directly with variable reluctance magnetic pickups
n Op amp/comparator has floating transistor output n 50 mA sink or source to operate relays, solenoids,
meters, or LEDs n Frequency doubling for low ripple n Tachometer has built-in hysteresis with either differential
input or ground referenced input n Built-in zener on LM2917 n ±0.3% linearity typical n Ground referenced tachometer is fully protected from
damage due to swings above VCC and below g.
LM2-907.pdf